Nassau County  »  11791  »  Underhill Ave  »  29 Underhill Ave

29 Underhill Avenue, Syosset, NY 11791 - Property report

Also known as: 29 Underhill Ave

Property image for 29 Underhill Avenue, Syosset, NY 11791
static Mapbox map

Property type

One Family Year - Round Residence (210.01)

Year built

1954

Acreage

0.163

Sale price

$1,238,888

General information

Unlock this property report with a free account

Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
29 Underhill Avenue
ZIP code
11791
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
None (unincorporated town)
Parcel ID
15-81-2

Owner

Find out who owns 29 Underhill Avenue, Syosset, NY 11791. Uncover corporate and individual owners with a free account.

Sales
Sale date
11/06/2025
Sale price
$1,238,888
Arm's length
Tax
Tax year
2026
Current property tax
$19,869
Tax class
Zoning & Use
Zoning
R1-7
Building
Property type
One Family Year - Round Residence (210.01)
Building sq. ft.
1,937
Buildings on lot
1
Stories
1.5
Year built
1954
Rooms
11
Bathrooms
3
Half bathrooms
1
Exterior wall
Alum/Vinyl
Building style
Cape
Basement
Full
Attic
None
Heating type
Central
Heating system
Hot water
Lot
Acreage
0.163
Topography
Level
Land
Primary site

Area overview

Walk score
69 /100.  Somewhat Walkable
Transit score
0 /100.  Minimal Transit
Bike score
49 /100.  Somewhat Bikeable
School district
3014

View more such as transportation, nearby schools and risk designations.

Ownership

Ownership information for 29 Underhill Avenue, Syosset, NY

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 29 Underhill Avenue, Syosset, NY 11791

Sale date Sale price Buyer name Seller name
11/06/2025 $1,238,888 XXXXXX XXXXX; XXXXXX XXXXX XXXXX XXX
11/06/2020 $712,000 XXXXX XXX XXXXXX XXXXXXXXX; XXXXXX XXXXX
05/31/2003 $417,500 XXXXXX XXXXXXXXX XXXXXXXX XXXXXXX

*Most recent sales on record for this property.

More about Nassau County property records.

Title documents

Date Type Amount Party 1 Party 2
12/01/2025 - R Other
(Mortgage Satisfaction)		 XXXXX XXX XXXXX XXXXX XXXX XX
11/25/2025 - R
11/06/2025 - D		 Deed
(Deed-Deed)		 XXXXX XXX XXXXXX XXXXX
06/20/2022 - R Other
(Mortgage Satisfaction)		 XXXXXX XXXXXXXXX XXXX XX XXXXXXX XX
01/21/2021 - R Other
(Mortgage Satisfaction)		 XXXXXX XXXXXXXXX XXXXXXXX XX
11/18/2020 - R
11/06/2020 - D		 Deed XXXXXX XXXXXXXXX XXXXX XXX
11/18/2020 - R
11/06/2020 - D		 Mortgage
(Fixed Rate)		 XXXXX XXX XXXXX XXXXX XXXX XX
12/01/2003 - R
05/31/2003 - D		 Deed XXXXXXXX XXXXXXX XXXXXX XXXXXXXXX
01/09/2002 - R
12/28/2001 - D		 Deed XXXXXXX XXXXX & XXXXXX XXXXXXXX XXXXXXX & XXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 29 Underhill Avenue, Syosset, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2026
Current property tax
$19,869
Base tax
$20,487
Current school tax
Recent tax assessments
Market value
$630,000
Assessed value
$630
Transitional assessed value
Exemptions

More about Nassau County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Market value Assessed value Tax rate Property tax Y-o-Y change
2026 $630,000 $630 3251.91 $20,487 +3.73%
2025 $629,000 $629 3139.97 $19,750 -3.37%
2024 $671,500 $608 3361.673 $20,439 -14.60%
2023 $685,000 $685 3493.926 $23,933 -3.17%
2022 $647,000 $647 3820.056 $24,716 -14.40%
2021 $672,000 $672 4296.58 $28,873 +93.27%
2020 $317,600 $794 1881.494 $14,939 -0.60%
2019 $340,400 $851 1766.064 $15,029 -0.80%
2018 $363,200 $908 1668.546 $15,150 -0.67%
2017 $386,000 $965 1580.606 $15,253 -6.57%
Permits

Permit information for 29 Underhill Avenue, Syosset, NY

No recently recorded permits for this property.

Neighborhood

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 29 Underhill Avenue, Syosset, NY 11791 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Willits Elementary School 9 Public K-5 305 0.39
South Grove Elementary School 9 Public K-5 416 0.53
St Edward Confessor School NR Private PK-8 265 0.89
St Edward Confessor School NR Private PK-8 265 0.89
Baylis Elementary School 9 Public K-5 405 1.00
Village Elementary School 9 Public K-5 415 1.04
Robbins Lane Elementary School 9 Public K-5 500 1.24
P.S. 256 NR Public PK, K-12 500 1.30
P.S. 256 NR Public PK, K-12 500 1.30
Judy Jacobs Parkway Elementary School 8 Public K-4 392 1.42
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
H B Thompson Middle School 9 Public 6-8 997 0.50
St Edward Confessor School NR Private PK-8 265 0.89
Fusion Academy Woodbury Ny NR Private 6-12 75 1.02
P.S. 256 NR Public PK, K-12 500 1.30
South Woods Middle School 8 Public 6-8 746 1.90
Plainview Old Bethpage Middle School 8 Public 5-8 889 2.05
The Center For Developmental Disabilities NR Private 105 2.11
Our Lady Of Mercy School NR Private PK-8 195 2.16
Good Shepherd Lutheran School NR Private 0 2.20
Jericho Middle School 9 Public 6-8 810 2.24
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Fusion Academy Woodbury Ny NR Private 6-12 75 1.02
P.S. 256 NR Public PK, K-12 500 1.30
Our Lady Of Mercy Academy NR Private 9-12 359 1.49
Syosset Senior High School 10 Public 9-12 2,266 1.87
The Center For Developmental Disabilities NR Private 105 2.11
Good Shepherd Lutheran School NR Private 0 2.20
Jericho Senior High School 10 Public 9-12 1,258 2.24
Long Island Lutheran Middle & High School NR Private 6-12 439 2.68
Plainview Old Bethpage JFK High School 10 Public 9-12 1,649 2.77

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 29 Underhill Avenue, Syosset, NY

14 Willets Ave, Syosset 27 Underhill Ave, Syosset 6 Willets Ave, Syosset 16 Willets Ave, Syosset 20 Willets Ave, Syosset 14 Williams Ave, Syosset 31 Underhill Ave, Syosset 18 Williams Ave, Syosset 12 Williams Ave, Syosset 4 Willams Ave, Syosset 8 Willets Ave, Syosset 22 Willets Ave, Syosset 32 A Underhill Ave, Syosset 10 Willets Ave, Syosset 18 Willets Ave, Syosset 20 Williams Ave, Syosset 32 Underhill Ave, Syosset 12 Willets Ave, Syosset 16 Williams Ave, Syosset 10 Williams Ave, Syosset

Nearby ZIP codes for 29 Underhill Avenue, Syosset, NY

11545, Nassau County, NY 11548, Nassau County, NY 11554, Nassau County, NY 11560, Nassau County, NY 11568, Nassau County, NY 11590, Nassau County, NY 11709, Nassau County, NY 11714, Nassau County, NY 11724, Suffolk County, NY 11732, Nassau County, NY 11743, Suffolk County, NY 11747, Suffolk County, NY 11753, Nassau County, NY 11756, Nassau County, NY 11765, Nassau County, NY 11797, Nassau County, NY 11801, Nassau County, NY 11804, Nassau County, NY

Frequently asked questions

What is the year built for 29 Underhill Avenue, Syosset, NY 11791?

The development at 29 Underhill Avenue, Syosset, NY 11791 was built in 1954.

What is the total square footage of 29 Underhill Avenue, Syosset, NY 11791?

29 Underhill Avenue, Syosset, NY 11791 has a total of 1,937 square feet.

When was 29 Underhill Avenue, Syosset, NY 11791 last sold and what was the sale price?

29 Underhill Avenue, Syosset, NY 11791 was last sold on 11/06/2025 for $1,238,888.

What is the assessed value of 29 Underhill Avenue, Syosset, NY 11791?

29 Underhill Avenue, Syosset, NY 11791 is currently assessed at $630.

What are the property taxes for 29 Underhill Avenue, Syosset, NY 11791?

The property taxes for 29 Underhill Avenue, Syosset, NY 11791 total $20,487.

Disclaimer

Copyright 2003-2026 by PropertyShark.com

All data comes from government sources. No attempt has been made to validate it. No attempt has been made to validate the accuracy of the programming of this website.

Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.

Sign up for a free account